问题描述
这是我的枚举结构。
public enum DictionaryEnum {
ARROW(
"Arrow",new String[] {
"noun"
},new String[] {
"Here is one arrow: <IMG> -=>> </IMG>"
}
),BOOK(
"Book",new String[]{
"noun","noun","verb","verb"
},new String[]{
"A set of pages.","A written work published in printed or electronic form.","To arrange for someone to have a seat on a plane.","To arrange something on a particular date."
}
);
基本上，如果用户以反向方式输入书籍。输出应该是单词本的相反定义。
这是我到目前为止所拥有的：
String[] keywords = input.split(" ");
String key = keywords[0];
String[][] result = dictionary.get(key);
if (keywords[1].toLowerCase().equals("reverse") && !keywords[1].toLowerCase().equals("distinct")) {
for (int i = DictionaryEnum.values().length - 1; i >= 0; --i) {
DictionaryEnum e = DictionaryEnum.values()[i];
System.out.println(e);
}
}
但是您可以猜到，它输出整个枚举结构的逆向，而不是结构内部单个项的逆向。
Book [noun] : A set of pages.
Book [noun] : A written work published in printed or electronic form.
Book [verb] : To arrange for someone to have a seat on a plane.
Book [verb] : To arrange something on a particular date.
如果类型为“ book反转”，则输出应为
Book [verb] : To arrange something on a particular date.
Book [verb] : To arrange for someone to have a seat on a plane.
Book [noun] : A written work published in printed or electronic form.
Book [noun] : A set of pages.
解决方法
您首先需要找到所选的DictionaryEnum：
const button = Vue.component('button',{
props: {
id: String,color: String
},data: function() {
return {
count: 0
}
},template:
`
<div class="button">
{{ count }}
</div>
`
});
然后，您可以使用给定Enum的数据结构来打印所需的内容。
请注意：我不会对字典等内容使用不可修改的数据结构，因为将来很可能要添加其他来源的条目。
,由于您发布的枚举不完整，所以我必须自己填写缺失的部分。因此请记住，枚举字段名称和方法的名称可能与代码中的名称不同：
lambdaNumbertOneFunctionName - value-1
lambdaNumberOneFunctionArn - value-1
lambdaNumberTwoFunctionName - value-2
lambdaNumberTwoFunctionArn - value-2
现在，我添加的大多数内容都是简单的getter / setter和构造函数，该构造函数应与您所拥有的大致相同。您可能感兴趣的是我添加的静态方法public enum DictionaryEnum {
ARROW(
"Arrow",new String[] {
"noun"
},new String[] {
"Here is one arrow: <IMG> -=>> </IMG>"
}
),BOOK(
"Book",new String[]{
"noun","noun","verb","verb"
},new String[]{
"A set of pages.","A written work published in printed or electronic form.","To arrange for someone to have a seat on a plane.","To arrange something on a particular date."
}
);
private final String name;
private final String[] keys;
private final String[] values;
private DictionaryEnum(String name,String[] keys,String[] values) {
this.name = name;
this.keys = keys;
this.values = values;
}
public String getName() {
return name;
}
public String[] getKeys() {
return keys;
}
public String[] getValues() {
return values;
}
/**
* Will return the fitting DictionaryEnum for the passed name,or null if not found
* @param name
* @return
*/
public static DictionaryEnum getByName(String name) {
for (DictionaryEnum dictionaryEnum : values()) {
if(dictionaryEnum.getName().equalsIgnoreCase(name)) {
return dictionaryEnum;
}
}
return null;
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter command:");
String input = scanner.nextLine();
String[] keywords = input.split(" ");
String name = keywords[0];
String command = keywords[1];
// 1. Use our static method to get the fitting enum:
DictionaryEnum dictionaryEnum = DictionaryEnum.getByName(name);
if (dictionaryEnum == null) {
// if the returned object was null no fitting match was found
System.out.println("NO ENUM FOUND!");
} else {
// 2. We found a fitting enum object! Lets use that object to iterate over its contents
if ("reverse".equals(command)) {
for (int i = dictionaryEnum.getKeys().length - 1; i >= 0; i--) {
String key = dictionaryEnum.getKeys()[i];
String value = dictionaryEnum.getValues()[i];
System.out.println(dictionaryEnum.getName() + " [" + key + "] : " + value);
}
} else {
for (int i = 0; i < dictionaryEnum.getKeys().length; i++) {
String key = dictionaryEnum.getKeys()[i];
String value = dictionaryEnum.getValues()[i];
System.out.println(dictionaryEnum.getName() + " [" + key + "] : " + value);
}
}
}
scanner.close();
}
}
。此方法采用String参数，然后遍历存在的所有枚举对象。它将传递的参数与名称字段进行比较，如果相等（忽略大小写），它将返回该枚举对象。如果循环在未找到匹配项的情况下结束了runnig，它将返回null。
因此，调用类似public static DictionaryEnum getByName(String name)的方法将返回对象DictionaryEnum.getByName("arrow");。
有很多方法可以通过输入查找所需的枚举（有关另一个示例，请参见Fabian Tschachtli的答案），但是您需要首先获取正确的枚举对象，然后才能执行其他操作。
所有您需要做的就是使用找到的枚举对象正常或反向遍历Array字段。您可以在我添加的main方法中看到所有内容，然后运行代码本身。